Solvothermal synthesis and luminescent properties of Y2Ti2O7: Eu3+ spheres

E. Pavitra, G. Seeta Rama Raju, Jae Su Yu

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24 Scopus citations

Abstract

Pyrochlore-structured yttrium titanate phosphors activated by trivalent europium ions (Y2Ti2O7(YT):Eu3+), with spherical morphology, were synthesized at different pH values by a solvothermal process. From the structural and morphological measurements, the annealing temperature had no effect on the spherical morphology of the YT:Eu3+ sample. The photoluminescence excitation and emission spectra were taken by activating the Eu3+ ions in the YT host lattice as functions of Eu3+ ion concentration and annealing temperature. The optimal doping concentration was found to be 4 mol%, exhibiting an excellent orange-red emission due to the highest intensity of the 5D07F1 transition. When the YT:Eu3+ phosphor was mixed with YAG:Ce3+ phosphor, a brilliant white light emission was achieved. (

Original languageEnglish
Pages (from-to)224-227
Number of pages4
JournalPhysica Status Solidi - Rapid Research Letters
Volume7
Issue number3
DOIs
StatePublished - Mar 2013

Keywords

  • Luminescence
  • Solvothermal method
  • Spherical morphology
  • YTiO:Eu phosphors

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